Refrigerator



Oct. 19 1926. 2 1,603,905 l.. G. coeEMAN REFRIGERATOR vFiled May 29, 1924 2 Smets-Sheav '1 a I/L/ L U Lf///J l 4 I l "f gu 'if i:: Z n 5 m v I ATTORNEY.

oct: 9

L. G. COPEMAN REFRIGERATOR Filed May 29.l 1924 2 Sheets-Sheet 2 BKM 5W ATTORNEY.

Patented Oct. 19, 1926.

yPATENT OFFICE..`

UNITED STATES lLLOYD e.

OOPEMAN, OEFLINT, MIOH'IGAN, ASSIGNOR TO COPEMANA LABORATORIES nnrnrennaron.

applicati@ nea may 29,

15 ner shell in spaced relation with respect to the outer shell.

vAnother feature is the casting of fibrous strips onto the inner shell to which a cover or back plate may be secured, said back plate w being also secured to the outershell, thereby rigidly supporting the inner shell in spaced relation with respect to the outer shell. Y v

'In the drawings:

Fig. 1 is a vertical section through the refrigerator taken on the line 1--1 of Fig. 2.

Fig. 2 is a horizontal section through the refrigerator taken on the line 2 2- of Fig.l l..

Fig. 3 is a vertical section through the refrigerator taken on the line 3 8 of Fig. 2.

Fig. 4: is a detail section taken on the line 4 4 of Fig. 2, showing the fastening means by which the strip is secured to the inner shell and secured to the back plate.

Fig. 5 is an enlarged detail showing the insulation structure in detail.

The refrigerator comprises an outer shell a, which is preferably formed of a built upstructure of fibrous material, such as wood, or it may be moulded stone. This outer shell is provided with an opening b at the rear and is provided with a plurality of door openings e at the front. Secured to the front. wall of the outer.

shell are a plurality of angle bars d which are shown in Fig. 1 as surrounding the door.. openings c. The inner shell e is telescoped within the outer shell by inserting the same through the opening at the rear of the outer shell while the outer shell is lying on its face on the oor. The inner shell is provided with partitions f which divide the inner shell into a pluralf ity of chambers. This inner shell is fitted 1924. 'serial No. 71am.

in between the angle bars d and the tension members g, which are preferably formed of wide, flexible steel straps secured to the angle bars d at a plurality of spaced points. As shown in Fig. 2,y these tension members are looped through an opening in the angle bars; the two parts of the strap then being crimped together asy at lz, for securely anchoring said tension members tothe angle bars. The free end of these 'flexible straps or tension members are then pulled taut about the inner shell and are secured together asat i by clamping the same together with a suitable tool.

I have provided a number of fibrous strips y', preferablyvof wood, which are cast united with the back wall of the inner shell. To accomplish this I first drive a plurality of large headed nails 7c in the strips, j. They are then inserted in the mould insuch a way that when the inner shell is cast they. cement will flow about these heads of the4 nails which project from the strip and thus securely key the strip to the stone work which forms the inner shell. These strips are provided. with a plurality of tunnels m through which the tension membersl g are passed so that when the said tension members are clamped aboutthe inner shellthey will engage said inner shell throughout their entire length, and securely grip the inner shell.

Before inserting the inner shell into the outer shell, I line the outer shell with a relatively thick layer of cork board, designated 7L. In the preferred form of construction, inwhich the outer shell is formed of a fibrous material, this cork board may be secured in place by nails or other suitable fastening devices, as shown at o. After the inner shell has been ositioned within the outer shell and secure thereto by the clamping devices above described, I pack the space between the inner4 and outer shells with cork fragments and then pour in a binder that is 100 a non-conductor of heat, such as pitch, which fills all the 'crevices existing in the cork fragments, thereby forming a solid wall struct-ure.

This insulating medium formed of cork lo fragments and a binder is easily handled.

-The relatively small cork fragments are packed in the space between the inner shell and the cork lining secured to the outer shell 1n such a way that the fragments contact no with each other. -The binder preferably pitch, is poured, after being heated, over these cork fragments`,`thereby filling the interstices between said cork fragments. This results in practically isolating the binder material in the form 'of islands as clearly y'shown in Fig. 5, where the cork fragments are designated t and the binder or pitch is designated u, and shown as heavily shaded.

.As a result, this insulating packing when set Y struction in which the outer shell is formed of cast stone as this packing will reinforce the refrigerator so that the same may resist compressive strains.

I neXt lay some layers of cork board on y top of this inner shell, the said cork board positioned between-the fibrous strips j. This serves to thoroughly insulate the rear portion of the refrigerator and serves to prevent the conduction of heat from the exterior into the interior of the refrigerator.

I provide a cover plate s, which is more commonly termed a back plate, for closing the large opening in the rea-r of theouter shell. This back plate is fastened down by means of fastening devices g to the wooden strips j carried by the inner shell. This is shown in Figs. 2 and 4. .In addition, the fastening devices r secure this back'plate to the outer shell, as shown in Fig. 2.

It will be plain from this that the inner shell is securely tied .to the outer shell and floated therein by means of these several forms of fastening devices, to wit: tension members which secure the shell to the front wall of the outer shell, the angle bars which support the front edge ,of .the inner shell andthe back plate which fastens the rear of the inner shell to the rear part of the outer shell.y The insulating material between the outer and the innerl shell additionally supports the inner shell Iat inter- ,mediate points.

What I claim is: 1. In a container structure, the combination of an outer shell provided with an opening,`an inner shell therein and secured thereto in spaced relation, said inner shell provided with a fibrous strip secured thereto, and a back plate fitted in the opening of the outer shell and engaging the outer shell and secured tothe fibrous strip secured to the -inner shell.

'2. In ,a container structure, the combination of an outer shell provided with an opening, an inner shell therein and secured thereto in spaced relation, said inner shell provided with a fibrous strip cast-united thereto, and a back plate for closing the opening in the outer shell and secured to both the outer shell and to the fibrous strip carried by the said inner shell.

3.'In a 'container structure, the combination of an outer shell provided with an opening in the rear thereof, the inner shell therein and secured thereto in spaced relation, said inner shell provided with a fibrous strip cast-united to the back wall thereof, and a back plate for closing the opening in the rearof the outer shell andconnected to the fibrous strip carried by the back wall of the ,innerI shell. Y

4. In a container structure, the combination of an outer shell provided with an opening, an inner shell telescoped therein and secured thereto in spaced relation, said inner shell provided with a fibrous strip secured thereto, an insulating medium between said inner and outer shells comprising relatively small fragments of cork and a binder, and a back plate for closing the opening in the outer shell and secured both to the outer shell and to carried by the inner shell.

5. In a container structure, the combination of an outerk shell provided with an opening and having a relatively thick layer of cork board secured to the inside face of the walls of the outer shell, an inner shell Within the outer shell and secured thereto in spaced relation, said inner shell provided with a fibrous strip secured thereto, and a back plate fitted in the opening in tho outer shell and engaging both1 the outer shell and secured to the fibrous stripcarried by the inner shell for fastening the inner shell in such spaced relation.

6. In a refrigerator construction, the combination of an outer shell provided with an opening at the rear and one or more door openings at the front, said outer shell having secured thereto angle bars which lsurvthe fibrous strip round said openings, an inner shell telescoped within the outer shell and provided with one .or more chambers registering with the door openings in the front of the outer shellJ tension members anchored to said angle l'barsand clamped about the inner shell for securing the said inner shell to the outer shell and floating the inner shell therein in spaced relation with respect to the outer.

shell, a lining of cork board secured to the walls of the outer shell, relatively .small cork fragments packed in between the inner shell and the cork lining, said fragments contacting with each other, a binder poured onsaid cork fragments to fill up the .interstices between the fragments to form a solid insulating wall structure when allowed to set, fibrous strips secured to the" back wall of the inner shell, strips of cork board fitted between said fibrous strips for forming an insulated wall at the back of the refrigerator, and a back. plate for closing the opening in the rear of the outer shell and secured both to the outer shell and to the fibrous strips carried by said inner shell.

7 In a refrigeratorconstruction, the combination of an outer shell provided with an opening at the rear and one' or more door openings at the front, said outer shell having secured thereto angle bars which surround said opening, an inner shell telescoped within the` outer shell and provided with one ormore'chambers registering with the door openings in the front of the outer shell, va tension member anchored to said angle bars and clamped about the inner shell for securing the said inner shell to the outer shell and floating the inner shell there! in in spaced relation with respect to the outer shell, a lining of cork board secured to the walls of the outer shell, relatively small cork fragments packed in between the inner shell and the cork lining, said fragments contacting with each other, a binder poured on said cork fragments to fill up the interstices between the fragments to form a solid insulatingwall structure when allowed.

to set.

8. Ina refrigerator construction the combination of an outer shell provided with an opening at the Arear and one or more door openings at the front, said outer shell having secured thereto angle bars which surround said opening, an inner shell tele shell, relativelysmall cork fragments packed. y

in between the inner shell andthe outer shell, said fragments contacting with each other, a binder poured on said cork fragments to lill up the interstices between the fragments to form a solid insulating wall structure when allowed to set.

In testimony whereof I have aixed my signature.

` y LLOYD' G. COPEMAN i 

